void execute( const FutureMap& input,
PromiseMap& output ) const
{
RenderingSetGenerator renderSetGenerator( _cache );
ConstCacheObjects cacheObjects;
size_t nVisible = 0;
size_t nAvailable = 0;
size_t nNotAvailable = 0;
for( const auto& visibles: input.get< NodeIds >( "VisibleNodes" ))
{
size_t available = 0;
size_t notAvailable = 0;
const ConstCacheObjects& objs = renderSetGenerator.generateRenderingSet( visibles,
available,
notAvailable );
cacheObjects.insert( cacheObjects.end(), objs.begin(), objs.end( ));
nVisible += visibles.size();
nAvailable += available;
nNotAvailable += notAvailable;
}
output.set( "CacheObjects", cacheObjects );
output.set( "RenderingDone", cacheObjects.size() == nVisible );
output.set( "AvailableCount", nAvailable );
output.set( "NotAvailableCount", nNotAvailable );
}
ConstCacheObjects generateRenderingSet( const NodeIds& visibles,
size_t& nAvailable,
size_t& nNotAvailable ) const
{
ConstCacheMap cacheMap;
for( const NodeId& nodeId : visibles )
{
collectLoadedTextures( nodeId, cacheMap );
cacheMap.count( nodeId.getId( )) > 0 ? ++nAvailable : ++nNotAvailable;
}
if( visibles.size() != cacheMap.size( ))
{
ConstCacheMap::const_iterator it = cacheMap.begin();
size_t previousSize = 0;
do
{
previousSize = cacheMap.size();
while( it != cacheMap.end( ))
{
if( hasParentInMap( NodeId( it->first ), cacheMap ))
it = cacheMap.erase( it );
else
++it;
}
}
while( previousSize != cacheMap.size( ));
}
ConstCacheObjects cacheObjects;
cacheObjects.reserve( cacheMap.size( ));
for( ConstCacheMap::const_iterator it = cacheMap.begin();
it != cacheMap.end(); ++it )
{
cacheObjects.push_back( it->second );
}
return cacheObjects;
}
void generateRenderBricks( const ConstCacheObjects& renderNodes,
RenderBricks& renderBricks )
{
renderBricks.reserve( renderNodes.size( ));
BOOST_FOREACH( const ConstCacheObjectPtr& cacheObject, renderNodes )
{
const ConstTextureObjectPtr texture =
boost::static_pointer_cast< const TextureObject >( cacheObject );
RenderBrickPtr renderBrick( new RenderBrick( texture->getLODNode(),
texture->getTextureState( )));
renderBricks.push_back( renderBrick );
}
}
